In a first, fossil bird found with unlaid egg “I couldn’t even sleep at night,” the lead paleontologist says of her reaction to the discovery. By Michael Greshko. March 20, 2019 ...

Unlaid eggs may be coated with a second layer, or sometimes more, of shell. This abnormality has also been documented in sauropod dinosaurs, and in fossil and living turtles.

A group of scientists in Gansu province have discovered a fossilized bird dating back about 110 million years and the first ever to have an unlaid egg in its abdomen. The fossil represents a new ...

Scientists have discovered the first fossil bird ever found with an egg preserved inside its body, a new study reports. The 110-million-year-old bird is a new species called Avimaia schweitzerae ...

An elephant bird egg (Aepyornis maximus) reconstructed from fragments in a Toliara (south-west Madagascar) market. In life, some species of elephant bird laid eggs up to 10kg in weight – the volume of ...

Yet this doesn’t mean that early fossil birds were exactly like their living kin. ... such as arthropod, amphibian egg, or plant fossils – can’t be ruled out just yet.

The colors of modern bird eggs derive from just two pigments: biliverdin and protoporphyrin IX. The researchers detected both pigments in their fossil eggshell samples.

Fossilized egg shells found in Alberta from a bird-like dinosaur called the troodon offer new evidence about how dinosaurs lived, bred and evolved into birds, a new study reports.

Eggs have been laid on land by birds, reptiles, ... The first oviraptor fossil—from a family of dinosaurs with parrotlike beaks—was discovered in Mongolia in the 1920s, ...

What fossil eggs found in Alberta reveal about how dinosaurs became birds Published on Apr. 4, 2023, 8:23 PM Chemical analysis of troodon eggshells show bird-like and reptile-like traits.

Zhao Bi blows the dust off dinosaur egg fossils at the Qinglong Mountain Dinosaur Egg Fossil Site Museum in Shiyan, Hubei province, in May (WU ZHIZUN / XINHUA) Tyrannosaurus rex, a dinosaur with a ...

Researchers said the fossil flamingo egg found at Santa Lucía likely dates back to between 12,000 and 8,000 years ago. The egg in question measures under 4 inches in length and has a maximum ...